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Reports comparisons of the result of <code>Comparator.compare()</code> or <code>Comparable.compareTo()</code> calls with non-zero constants.
By contract, these methods can return any integer (not just -1, 0 or 1),
  so comparing against particular numbers is bad practice. Some widely used comparison methods (e.g. <code>String.compareTo()</code>)
  actually return values outside the [-1..1] range, and such a comparison may cause incorrect program behavior.
<p>Example:</p>
<pre><code>
  void validate(String s1, String s2) {
    // Comparing to 1 is incorrect
    if (s1.compareTo(s2) == 1) {
      throw new IllegalArgumentException("Incorrect order");
    }
  }
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  void validate(String s1, String s2) {
    if (s1.compareTo(s2) > 0) {
      throw new IllegalArgumentException("Incorrect order");
    }
  }
</code></pre>
<!-- tooltip end -->
<p><small>New in 2017.2</small></p>
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